Includes a link to information from FEMA, primarily for flood zones, but appropriate for helping to understand the process. Also includes a link to Wikipedia's description of raising a house.
And there's more, intended to help you find the information you need without having to wade through normal search results.
Elevating Your House
(pdf) - FEMA - 'Homeowner's Guide To Retrofitting'
House Raising - Wikipedia
Lifting A House - Ask.com
Raising A House - About.com